Question

Hello, I have a question, I would be glad if you can help.

What should the speed ω be for the arms to be fully opened?

Answer 1

infinite

Step-by-step explanation:

The tangent of the angle the arm makes with the vertical will be the ratio of the centripetal acceleration to the acceleration due to gravity on the center of mass of the arm. The angle can only be 90° (fully-open arms) if that ratio is infinite.

The speed must be infinite for the arms to be fully open.